Sliding visor helmet attachment



FIG. 1 is a perspective view of a sliding visor helmet attachment with the visor engaged showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is an opposite side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is another perspective view thereof with the visor disengaged.

The broken lines shown in the drawings are for the purpose of illustrating portions of the sliding visor helmet attachment and form no part of the claimed design. 

CLAIM The ornamental design for a sliding visor helmet attachment, as shown and described. 